Active Wavefront Control for High Contrast Exoplanet Imaging from Space

Details Active Wavefront Control for High Contrast Exoplanet Imaging from Space Active Wavefront Control for High Contrast Exoplanet Imaging from Space

Jun 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007lyot.confe..28t&link_type=abstract

Proceedings of the conference In the Spirit of Bernard Lyot: The Direct Detection of Planets and Circumstellar Disks in the 21s

Computer Science

Scientific paper

Active correction of the optical wavefront is an element of all coronagraphs designed for high-contrast imaging from space. This can be accomplished with one or more deformable mirrors, guided by information from the central star and known characteristics of the coronagraph elements. This is a report of wavefront sensing and control methods used, in the laboratory, to suppress background speckles of starlight to levels more than a billion times fainter than the star at angular separations as small as 4 lambda/D. These methods illustrate a coronagraphic approach to the imaging and spectroscopy of exoplanets as small as an Earth-twin in reflected starlight

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